Door-operated switch



F. HOENNINGER, JR. DOOR OPERATED SWITCH. APPLICATION FILED MAR.4.'19"20.

Patented Apr. 18, 1922;

UNITED STATES? JOHN F. HOENNIKGER, 33,01"LANCASTER;'rmINsYLvANiA.

DOOR-OPERATED swicrcn.

To all whom it may concern. 1

. Be it known that 1, JOHN F. Honnmnonn, Jiz .,'a citizen of thellnited States, residing at Lancaster, in the county :"of Lancaster, State of" Pennsylvania, have invented certain new and useful Improvements in a Door- Operated Switch; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric signals, or more especially to those adapted to be actuated by the opening and closing of a door and the object of the same is to produce an improved term of circuit closer mounted on the header of the door trame and actuated by the swing of the door as it opens and again as it closes.

Devices of this character have hitherto been made wherein the circuit is closed when the door opens and remains closed while the door is open, so that the bell rings all the time; some are built on diiierent principles, and some are located along the edge of the door; many have the objection that they get out of action when the door sags or the frame settles; and few have theteatures of adjustability presented my improvement.

Details are given below, and attention is invited to the drawings wherein:

arms being numbered 23.

Figure 1 is a. side elevation of this structure and a section through the door and its frame.

Figure 2 is a plan view of the device.

Figure 3'is a cross section on the line of Figure 1.

The device is made in two principal parts or members. One of these is a block 1 having in its body a socket 27 which may open out the outer end of the block, and provided with a set screw 17 intersecting said socket, and this block has flanges which are secured to the face of the header 18 of. the door frame by screws 10, to one of which the line wire 7 is attached. block 2 having at its inner end a shank 20 which is preferably a. screw to enter the socket 27, liiit which. in any case is adjustably held beneath the set screw 17. This block 2 is forked at its outer end, the fork- At its inner end it has an upstanding lip 24 through which passes screw 16 entering a fibre block or insulator 5 which is by this means held upon the metal block 2. One terminal is a metal.

, Specification of Letters Patent.

The other member is another Patentecji Apr. s, wee.

Application filed March 4, 1920. semi No. 363,234. 1

fibre block 5 and 5 the other line bell, and the circuit is completed when uietailiccontact is made through the'block and to the tongue or terminal 4.

Passing removably through the fork-arms 23 is a pin .22 having a head 1i atone end and a nut21 at'the other, and mounted on this pin is the other terminal 3 which is formed in the shapeof a small metal roller having-a cam face at its top where it is cut off on a chordtrom the point to the point 26. This cam face is held normally uppermost and contiguous to but out of contact with'the terminal i, .by apendai'it'iinger or hammer 12 secured to the roller by means of a screw 15 depending from the roller and engaging a socket in the hammer, a jam nut 13 being employed to prevent disconnection of parts. Another means may also be employed for holding the roller terminal in its normal position, and as herein shown this is a spring 8 secured by a screw 11 to the bottom of the block or member 2, its outer end being coiled around the hub of the roller and secured to the latter. spring may be a fine piece of spring wire, extremely resilient, and it is so adjusted as to hold the roller in the position shown,

while permittinmit to turn either way on its pivot 22. 6bviously the hammer also will hold the roller. Either or both of these devices may be employed, but some pendant element 12 should always be used and the spring 8 is generally employed when this element is not sufliciently heavy.

The device is applied by attaching the inner member 1 to the header 18 of the door frame by the screws 10. The outer member- 2 is then attached to the inner member and adjusted so that the hammer 12 will hang as seen in Figure l a sufiicient distance away from the door 19 whichis there shown as closed. The wires are now connected with the battery and the alarm, not shown. When the door is opened, it raises the hammer to the right in Figure 1, and the point 25 rises into contact with the ton closes the circuit, the same remaining closed while the door passes under the hammer. As the door swings further open the circuit is broken and the bell ceases ringing. Whei e 4 and This the door is again closed, it swings the hammer in the opposite direction, and an alarm is again sounded. The duration of this alarm in either movement of the door depends upon the length of the hammer, and its length may be increased by unscrewing it down on the screw and setting up the jam nut 13. Also this meansv of adjustment is valuable when the door settles or the member 1 has not been secured to the header 18 at exactly the right point. During the opening movement of the door the outer end of the spring 8 is coiled a little tighter than shown, and during the closing movement of the door this end of the spring is uncoi1edin either case its tendency being to return to the position here seen. Therefore the spring assists the hammer in holding the parts at normal. hen at normal the cam face from to 26 is out of contact with the lower face of the tongue 4. When swung to either side, one angle will touch the tongue and close the circuit for an instant. \V hen parts are to be cleaned or repaired, the set screw 17 is loosened and the entire outer member removed from the inner member and taken down. At any time the shank may be adjusted in the socket 27 under the set screw, as varying conditions necessitate. The device is cheap to manufacture, reliable in use, hardly likely to get out of order, and capable of ready adjustment and cleaning as will be seen.

What is claimed is:

A door operated switch comprising a base block tor attachment to the head of a door casing and having a longitudinal threaded socket, a screw shank adjustably engaged in the. socket, means for holding the shank in its various adjusted positions, a fixed contact supported from the shank and insulated therefrom, and a second contact supported from the shank and movable into and out of engagement with the first contact when operatively engaged by a door, the contacts being movable with the threaded shank toward and from the base to space the second contact in different position for operation by the door.

In testimony whereof, I affix my signature, in the presence of two witnesses.

JOHN F. HOENNINGER, JR.

\Vitnesses J. H. DELLINGER, Amos 1). BnnKHoLuER. 

